题目内容

5.Everywhere man is altering the balance of nature.He is facilitating the spread of plants and animals into new regions,sometimes deliberately,sometimes unconsciously.He is covering huge areas with new kinds of plants,or with houses,factories,slag-heaps and other products of his civilization.He exterminates some species on a large scale,but favors the multiplication of others.In brief,he has done more in five thousand years to alter the biological aspect of the planet than has nature in five million.
Many of these changes which he has brought about have had unforeseen consequences.Who would have thought that the throwing away of a piece of Canadian waterweed would have caused half the waterways of Britain to be blocked for a decade,or that the provision of pot cacti for lonely settlers'wives would have led to Eastern Australian being overrun with forests of Prickly Pear?Who would have prophesied that the cutting down of forests on the Adriatic coasts,or in parts of Central Africa,could have reduced the land to a semi desert,with the very soil washed away from the bare rock?Who would have thought that improved communications would have changed history by the spreading of disease-sleeping sickness into East Africa,measles into Oceania,very possibly malaria into ancient Greece?
These are spectacular examples; but examples on a smaller scale are everywhere to be found.We make a nature sanctuary for rare birds,prescribing absolute security for all species; and we may find that some common and hardy kind of bird multiplies beyond measure and ousts the rare kinds in which we were particularly interested.We see,owing to some little change brought about by civilization,the starling spread over the English country-side in hordes.We improve the yielding capacities of our cattle; and find that now they exhaust the pastures which sufficed for less exigent stock.

31.The following examples exceptD reflect man altering the balance of nature.
A.man is covering huge areas with new kinds of plants
B.man is facilitating the spread of animals into new regions.
C.man is killing some species on a large scale
D.man is getting to know the importance of keeping the balance of nature.
32.What had a piece of Canadian waterweed cause?B
A.Eastern Australian was overrun with forests.
B.Half the waterways of Britain blocked for a decade.
C.In parts of central Africa,the land reduced to a semi desert.
D.Disease-sleeping has been caused.
33.What have spread diseases?C
A.Disease-sleeping sickness.      B.Measles.
C.Improved communications.        D.Malaria.
34.We make a nature sanctuary for rare birds butA.
A.some common and hardy kind of bird multiplies
B.rare kinds multiply
C.all bird multiply
D.no bird multiply
35.The main idea of the passage isD.
A.that man is deliberately destroying the balance of nature
B.that man has foreseen the consequences of altering the balance old nature
C.that improved communications have changed history
D.that man is altering the balance of nature.

分析 本篇文章主要讲的是人类正改变着自然界的平衡.

解答 31~35   DBCAD
31题答案是D.细节理解题.根据文章第一段,A、B、C都是三项人类改变生态平衡事例,D项叙述的是事实,但不属于人类改变生态平衡事例.故选D.
32题答案是B.推理判断题.根据Who would have thought that the throwing away of a piece of Canadian waterweed would have caused half the waterways of Britain to be blocked for a decade加拿大被扔掉的一块伊乐藻会堵塞英国一半的水道长达10年.可知答案是B.
33题答案是C.细节理解题.根据Who would have thought that improved communications would have changed history by the spreading of disease-sleeping sickness into East Africa改进后的通信会通过传播昏睡病到东非而改变世界,可知答案是C.
34题答案是A.细节理解题.根据We make a nature sanctuary for rare birds,prescribing absolute security for all species; and we may find that some common and hardy kind of bird multiplies beyond measure and ousts the rare kinds in which we were particularly interested 我们为稀有鸟类提供避难所,但是常见的鸟类和哈代鸟极度繁殖.可知选A.
35题答案是D.主旨大意题.文章的主题是人类正改变着自然界的平衡.故选D.

点评 这是一篇环保类阅读.题目涉及多道细节理解题,做题时需要结合原文和题目有针对性的找出相关语句进行仔细分析,结合选项选出正确答案;考查文章大意的题需要对文章大意有清晰的理解才能得出正确答案,切记胡乱猜测,一定要做到有理有据.

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B.It earns money by putting on advertisements
C.It provides loads of personal information to its users
D.It makes money by selling its users'personal data
29.What does the author say about most Facebook users?D
A.They are unwilling to give up their personal information
B.They care very little about their personal information
C.They don't identify themselves when using the website
D.They don't know their personal data enriches Facebook
30.Why does Facebook make changes to its rules according to Elliot Schrage?B
A.To obey the Federal guidelines
B.To provide better service to its users
C.To improve its users'connection
D.To expand its business
31.Why does the author plan to cancel his Facebook account?A
A.He doesn't want his personal data badly used
B.He finds many of its users untrustworthy
C.He is dissatisfied with its present service
D.He is upset by its frequent rule changes.

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